Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the behavioral burden. It implies a safe, read-only operation via the word 'List' and scopes results to DAGs 'known to the server.' However, it does not mention potential pagination, authentication requirements, or any edge-case behavior; for a simple no-parameter list tool, this level is adequate but not thorough.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.